Alright, let's work through 9644 times 1672 step by step
9644 × 1672 = 1672 × (9644)
+ 1672 × 4 that is equal 6688
+ 1672 × 40 that equals 66880
+ 1672 × 600 giving us 1003200
+ 1672 × 9000 yielding 15048000

= 16124768
